Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2024-43405— Nuclei Template Signature Verification Bypass

Quick assessment

Affected
projectdiscovery nuclei
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Nuclei是ProjectDiscovery开源的一个基于简单 YAML 的 DSL 的快速可定制漏洞扫描器。 Nuclei 3.0.0至3.3.2之前版本存在安全漏洞，该漏洞源于模板签名验证系统中的处理换行符不一致，可能导致攻击者绕过签名检查并通过自定义代码模板执行恶意代码。

CVSS 7.4 · High EPSS 1.11% · P65
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2024-43405

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Nuclei Template Signature Verification Bypass
Source: CVE Program / CVE List V5
Vulnerability Description
Nuclei is a vulnerability scanner powered by YAML based templates. Starting in version 3.0.0 and prior to version 3.3.2, a vulnerability in Nuclei's template signature verification system could allow an attacker to bypass the signature check and possibly execute malicious code via custom code template. The vulnerability is present in the template signature verification process, specifically in the `signer` package. The vulnerability stems from a discrepancy between how the signature verification process and the YAML parser handle newline characters, combined with the way multiple signatures are processed. This allows an attacker to inject malicious content into a template while maintaining a valid signature for the benign part of the template. CLI users are affected if they execute custom code templates from unverified sources. This includes templates authored by third parties or obtained from unverified repositories. SDK Users are affected if they are developers integrating Nuclei into their platforms, particularly if they permit the execution of custom code templates by end-users. The vulnerability is addressed in Nuclei v3.3.2. Users are strongly recommended to update to this version to mitigate the security risk. As an interim measure, users should refrain from using custom templates if unable to upgrade immediately. Only trusted, verified templates should be executed. Those who are unable to upgrade Nuclei should disable running custom code templates as a workaround.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Nuclei 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nuclei是ProjectDiscovery开源的一个基于简单 YAML 的 DSL 的快速可定制漏洞扫描器。 Nuclei 3.0.0至3.3.2之前版本存在安全漏洞，该漏洞源于模板签名验证系统中的处理换行符不一致，可能导致攻击者绕过签名检查并通过自定义代码模板执行恶意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
projectdiscovery nuclei >= 3.0.0, < 3.3.2 -

II. Public POCs for CVE-2024-43405

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 11025 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2024-43405

请登录查看更多情报信息。

Patches & Fixes for CVE-2024-43405 (1)

IV. Related Vulnerabilities

Same product: nuclei
Same vendor: projectdiscovery
Same weakness: CWE-78

V. Comments for CVE-2024-43405

No comments yet

Leave a comment